Later that night: Ben Affleck, chatting for almost an hour with Sacha Baron Cohen at the Smokin' Aces premiere afterparty at the Hollywood Roosevelt Hotel's Blossom Room. They traded pats on the arm and whispered in each other's ears while a Common, Talib Kweli and Kanye West surprised the crowd with a six-song live performance. Also making the scene: Alicia Keys, Ryan Reynolds and Jason Bateman, who costar with Affleck in the movie, and Chris Rock.
Jessica and Ashlee Simpson, shopping at Barneys New York in Beverly Hills. "Ashlee was flipping through the dress rack," says a shopper. "Jessica was playing fashion designer, helping her sister find the perfect dress." Also browsing separately in the store: Maggie Gyllenhaal, who was looking at a pink shirt with a butterfly emblazoned on it.
Taye Diggs, hanging out a table with a large group of people at Teddy's lounge at the Hollywood Roosevelt. At one point, he chatted and danced with actress Leelee Sobieski. The Hills star Lauren Conrad also chilled with pals as Brody Jenner sat at a nearby table.
Mary-Kate and Ashley Olsen, purchasing big bags of gummy bears, trail mix and gum before boarding an international flight at Los Angeles International Airport. The sisters – wearing heavy coats, scarves and their signature oversized sunglasses – then walked into United Airlines' first-class lounge area. "They both reeked of cigarette smoke," says an observer.
Justin Timberlake, playing blackjack in the high-rollers lounge at the Mirage Hotel in Las Vegas and then heading to Hard Rock Hotel's Nobu for sushi with friends. That same night Kevin Federline went to the Tao nightclub, where he drank very little and hardly paid attention to the women at his table. Read more about the boys' night out for Britney Spears's exes in Vegas.
By MARK GRAY, KIMBERLY LANSING, DANIEL VARGAS and NICHOLAS WHITE
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